It will be quite a long timeshe is back again so don’t be too cross with her.A. thatB. si

问题补充：

It will be quite a long timeshe is back again, so don’t be too cross with her.

A. that

B. since

C. before

D. until

答案：

A. that

B. since

(答案→)C. before

D. until

解析：此题考查连词的用法。It is + 时段 + since / before / that...，用that则构成强调结构，since表示”自从……以来”，before”在……之前”，此句意思是”很久之后才回来，所以别对她发火”。